This model is discontinued
AirTAC has phased out the SI series. You can still order this code here: we ship the direct replacement SAID125X65, with the same bore, stroke, output force, port and mounting, so it fits the same application. The SAI replacement keeps the same ISO 15552 mounting interface, bore, stroke, output force and accessories, so it drops straight into existing fixtures. It is the current-production version of this cylinder with an upgraded piston seal.
Airtac SID Series Double-Rod Cylinder SID125X65
The AirTAC Airtac SID Series Double-Rod Cylinder SID125X65 is a double-acting ISO 15552 (orig. ISO 6431) profile-barrel cylinder with a Ø125mm bore and 65mm stroke, G1/2 air ports and adjustable end cushioning. This model is discontinued — the direct replacement is the SAID125X65, which matches its ISO interface, bore, stroke, force and mounting.
- BoreØ125 mm
- Stroke65 mm
- Port sizeG1/2
- Acting typeDouble acting
- Rod threadM27×2.0
- StatusDiscontinued → SAID125X65
- No minimum order. A single piece can be ordered.
- Ready in 3–5 business days. That is the time we take to process the order and hand it to the carrier. Transit time after that depends on the destination.
About the Airtac SID Series Double-Rod Cylinder SID125X65
The AirTAC SID125X65 is a double-acting, double-rod ISO 15552 cylinder featuring a 125mm bore and 65mm stroke. Because a 32mm rod exits both ends on one piston, push and pull force are equal at 5734N @0.5MPa, 8028N @0.7MPa, and 10321N @0.9MPa. This model is discontinued; the direct replacement is the SAID125X65, sharing the same G1/2 port, M27x2 rod thread, and 40mm cushion. The SAI upgrade uses a two-piece Y-shaped piston seal for lower start-up pressure and longer life.
With equal both-ways force, the back rod can drive a second tool or carry a sensor cam without sacrificing output. Note this SKU lacks a -S magnet, so it cannot accept legacy CS1-B/DS1-B switches. A plain cylinder drifts on air loss—the 40mm adjustable cushion only decelerates near stroke end, so use an external rod lock or SAIL/BSAI variant for held loads.
Airtac SID Series Double-Rod Cylinder SID125X65 Technical Specifications
| Model | Airtac SID Series Double-Rod Cylinder SID125X65 |
|---|---|
| Series | SI ISO 15552 profile cylinder (discontinued) |
| Replacement | SAID125X65 |
| Bore size | Ø125 mm |
| Stroke | 65 mm |
| Acting type | Double acting |
| Port size | G1/2 |
| Rod thread | M27×2.0 |
| Fluid | Air (filtered by 40µm element) |
|---|---|
| Operating pressure | 0.15 – 1.0 MPa |
| Proof pressure | 1.5 MPa |
| Temperature | -20 to +70 °C |
| Speed range | 30 – 500 mm/s |
| Cushion | Adjustable, 40 mm |
| Max standard stroke | Up to 1500 mm |
Specifications follow the official AirTAC SI datasheet (now discontinued). The SAID125X65 carries the same ISO 15552 ratings. Confirm against the product label before installation. Thread options: PT / G / NPT.
Theoretical Output Force (Ø125mm)
| Pressure | Push force | Pull force |
|---|---|---|
| 0.5 MPa | 6136 N | 5734 N |
| 0.7 MPa | 8590 N | — |
| Max (@1.0 MPa) | 1251 kgf | |
The SAID125X65 produces the same force from the same bore. Actual usable force is lower than theoretical; size with a margin.
Model Code: Airtac SID Series Double-Rod Cylinder SID125X65
| SI | ISO 15552 profile-barrel cylinder (discontinued). |
|---|---|
| 125 | Bore size in mm. |
| ×65 | Stroke length in mm. |
| -S | Optional built-in magnet for sensor position sensing. |
Legacy SI-family variants: SID (double rod), SIJ (adjustable stroke) — each maps to its SAI equivalent (SID→SAID, SIJ→SAIJ). Rod material: carbon steel (blank) / SUS420J2 (A) / SUS304 (B).
Where the Airtac SID Series Double-Rod Cylinder SID125X65 Is Used
Dual-Station Machining
Drives two opposing machining heads simultaneously from a single piston, utilizing the equal both-ways force to ensure perfectly synchronized parting or milling operations.
Anti-Rotation Transfer
Transfers heavy workpieces across a conveyor line where the twin-rod architecture prevents mechanical twist and droop, maintaining precise alignment without external linear guides.
Replacing the Airtac SID Series Double-Rod Cylinder SID125X65 with the SAID125X65
To replace the discontinued SID125X65, install the SAID125X65 directly—it preserves the ISO 15552 mounting interface, 125mm bore, 65mm stroke, and equal-both-ways force. Size both directions by confirming the 5734N @0.5MPa output fits your system; if less force is needed, step down to the 100mm bore (3681N @0.5MPa), or step up to 160mm (9425N) for more power. Choose a double-rod design when you need anti-rotation stability or dual-tool actuation. Reuse FA, LB, or TC mounts without altering the machine plate. Since this non-magnetic SKU cannot take sensors, add external physical stops. For this 65mm stroke side-load is minimal, but for any stroke >=300mm, ensure guide rails to prevent rod binding.
Replacement checklist
- ✓ Same ISO 15552 interface → SAID125X65
- ✓ Same bore / stroke / force
- ✓ Port/thread type (PT/G/NPT)
- ✓ Magnet (-S) for sensors?
- ✓ Mounting reused (FA/FB/CA/CB/CR/LB/TC)
Airtac SID Series Double-Rod Cylinder SID125X65 FAQ
Yes, the AirTAC SID125X65 is discontinued. The direct replacement is the SAID125X65. It shares the same ISO 15552 interface, 125mm bore, 65mm stroke, G1/2 port, and equal-both-ways force. The SAI family also adds upgraded two-piece Y-shaped piston seals for lower start-up pressure and longer life.
Because it is a double-rod cylinder, force is equal both ways: 5734N @0.5MPa, 8028N @0.7MPa, and 10321N @0.9MPa. The bore dictates a fixed G1/2 air port, a 32mm piston rod with an M27x2 thread, and a 40mm adjustable air cushion at each end. Speed is 30-500mm/s.
Related AirTAC SAI Cylinders
Request a Quote for the SAID125X65
Send us the quantity and destination. We confirm price, stock and lead time on the SAID125X65 replacement — usually within 7-8 hours.